TROUBLESHOOTING AND ELECTRICAL SYSTEM: 850 GAS
Test Procedures
Page 12-10
2007-2008 XRT 800, 810 and 850 Maintenance and Service Manual
12
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CAUTION
• Do not allow battery acid from battery caps or hydrometer to drip onto the body. Battery acid
will cause permanent damage. Wash off immediately.
Performing the Hydrometer Test
1. Be sure that the battery has sufficient water to cover the plates by approximately 1/2 inch (12.7 mm) and
is fully charged prior to beginning the test. If water must be added, recharge the battery before perform-
ing the hydrometer test
(Figure 12-4, Page 12-10)
.
2. Remove the vent cap.
3. Using a battery thermometer (CCI P/N 1011767), record the electrolyte temperature of a center cell.
4. Squeeze the rubber bulb of the hydrometer and insert into the cell. Slowly release the bulb, drawing elec-
trolyte up into the glass tube of the hydrometer.
5. When the float rises off the bottom, adjust the electrolyte level so that the float rides free of the bottom
but does not strike the bottom of the rubber bulb. Remove the hydrometer from the cell and release the
pressure from the bulb.
6. Hold the hydrometer vertically, ensuring that the float is not contacting the sides of the glass tube. Hold
the hydrometer at eye level and read the scale at the level of electrolyte
(Figure 12-3, Page 12-10)
.
7. Record the reading.
8. Return the electrolyte to the cell from which it was taken. Replace vent cap.
9. Repeat steps 2 through 8 on all cells.
Hydrometer Calibration
Most hydrometers are calibrated to read correctly at 80 °F (27 °C). The readings obtained as described above
must be corrected for temperature. For each 10 °F (5.6 °C) above 80 °F (27 °C), add 0.004 to the reading. For
each 10 °F (5.6 °C) below 80 °F (27 °C), subtract 0.004 from the reading.
Figure 12-3 Hydrometer Test
Figure 12-4 Battery Electrolyte Level
View at eye level.
1. Level Indicator 2. Cap 3. Plates
Electrolyte level at least 1/2 inch (13 MM) above plates or to
level indicator.
4 0
2 0
6 0
8 0
13 00
1.250
1.280
1
3
2
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